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选用板元、梁元和杆元的组合有限元模型对组合网架进行动力分析，研究了组合网架的自振特性，并利用振型分解反应谱法和时程分析法，分析了竖向地震作用下，组合网架的内力系数的大小和分布规律。在此基础上，提出了估计组合网架自振频率和竖向地震内力的简化方法，给出了简洁的竖向地震作用系数表，对组合网架的工程设计，具有重要的参考价值。
The combined finite element model of plate element, beam element and rod element is used to analyze the dynamic performance of the composite grid. The natural vibration characteristics of the composite grid are studied. By using the modal decomposition response spectrum method and the time history analysis method, The magnitude and distribution of the internal force coefficient of the composite grid under earthquake action. On this basis, a simplified method to estimate the natural frequency and the vertical seismic force of the composite grid is proposed. The concise vertical seismic action coefficient table is given, which has important reference value for the engineering design of the composite grid.